不同养猪模式对土壤As累积的影响  

Influence of Different Pig-raising Patterns on Soil As Accumulation

作　　者：马晗[1,2] 郭海宁[1,2] 郑凯琪 李买军 尹微琴[1,2] 王小治[1,2] 封克[1,2] 顾洪如[3] 

机构地区：[1]扬州大学环境科学与工程学院,江苏扬州225127 [2]江苏省有机固体废弃物资源化协同创新中心,南京210095 [3]江苏省农业科学院畜牧研究所,南京210014

出　　处：《农业环境科学学报》2014年第10期2042-2046,共5页Journal of Agro-Environment Science

基　　金：江苏省农业科技自主创新资金(CX(12)1001-6);江苏省苏北科技发展计划(BN2012027);江苏省三新工程(SXGC[2013]369)

摘　　要：通过对不同深度层次的发酵床垫料、垫料下土壤、发酵床外土壤和传统猪场外的土壤样品进行连续分析测定，比较了不同养殖模式下 As 的累积状况及对周边环境的影响情况。结果表明：发酵床垫料使用近1年后，As 在0～20、20～40 cm 垫料层中存在明显的累积，累积量分别达7.5、6.7 mg·kg-1，存在向垫料下层土壤迁移的风险，且 As 在垫料下土壤中浓度的增加量高于发酵床外同深度的土壤（P〈0.05）；废弃垫料中 As 的浓度在11.5～12.0 mg·kg-1之间，符合我国有机肥料农业行业标准，可以适当处理后进行农用；发酵床养殖模式对周边土壤中 As 累积的影响低于传统养猪模式。Increasing use of feeding additives in large scale pig farms has caused environmental and food safety concerns. Here we investi-gated soil As accumulation under different pig-raising methods. Arsenic concentrations in bio-bed litters and soils below litters（BL）, from out of bio-bed（OBB）and from out of traditional pig farm（TPF）were continuously monitored. Significant accumulation of As in litter layers occurred after one year of pig-raising,and As concentration was 7.5 mg·kg-1 and 6.7 mg·kg-1 in 0～20 cm and 20～40 cm layers, respec-tively. Moreover, As had a potential to move down to 40～80 cm in the soil below litters. The accumulation of As in the BL soils was higher than that in OBB soils（P〈0.05）. Arsenic concentrations in waste litters varied between 11.5 mg·kg-1 and 12.0 mg·kg-1, which met the China’s organic fertilizer agriculture standards. Bio-bed raising mode had less impact on As accumulation in surrounding soils than tradi-tional raising method.

关 键 词：发酵床养猪 传统养猪 垫料 土壤 砷 

分 类 号：X713[环境科学与工程—环境工程]